Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 10, 2009
Patent Application Number
11297823
Date Filed
December 8, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
A stainless steel comprising at least 20 weight % of chromium and at least 1.0 weight % of manganese is adapted to support an overcoating having a thickness from 1 to 10 microns of a spinel of the formula MnxCr3−xO4 wherein x is from 0.5 to 2. Preferably the overcoating is on chromia and has stability against chemical reaction at temperatures at least 25° C. higher than the uncoated chromia.
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